Lock-hinge



-'(No Model.)

J. WOLF. LOCK HINGE.

No. 540,707. 36 Patent-ed me 11, 1895.

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BY W/ATTY T D STATES PATENT ()FFICE.

osnr WOLF, F NEWARK, New JERSEY.-

LOCK-H 'I N Q E sPEoIFIcArrIoN forming part of Letters Patent No.540,707, dated June 11,1895. Appli a n find September 18, 1294. SerialNo. 523,326. motors.)

To all whom it mayconc'ern:

Be it known that L'JOSEF WOLF, a citizen of the United States, residingat Newark, in the county of Essex and State of New Jersey, have inventedcertain new and useful -Improvements in Lock-Hinges; andI do hereloydeclare the following to be a full, 'clear, and exact description of theinvntionpsuch as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to letters of reference marked there on,which form a part of this specification.

This invention has reference to improvements in lock-hinges forremovably hanging window shutters or light doors, &c., which also act toretain the shutter or door in its opened or closed position, and, actingas a hold-back, to retain the shutter or door in different positions, aswell as to serve as a means for automatically closing the door orshutter when partially opened.

The invention therefore consists in certain combinations andarrangements of parts to be hereinafter more fully described and finallyembodied in theclauses of the claim.

The invention is fully illustrated in the accompanying-sheet ofdrawings, in which- Figure 1 isa topview of my novel form of lock-hinge,illustrating the shutter and its frame in section, and the parts of thehinge being illustrated in their closed and normally inoperativepositions. Fig. 2 isa frontview of the same; Fig. 3, a longitudinalvertical section taken on line a: in Fig. 1; and Fig. 4. is a viewsimilar to that illustrated in Fig. 1, showingthe parts of thelock-hinge in their operative positions. Fig. 5 isafront endview of thecylinder end of the hinge, and Fig. 6 is a longitudinal vertical sectionof the'same with the inner mechanism removed. Fig. 7 is an end view of acylinder portion of the hinge of a slightly-modified form ofconstruction, being provided with additional perforated ears or lugs.Fig. 8 is a perspective view of a spring-actuated plunger used inconnection with the lock-hinge.

Similar letters of reference are employed in each of the above describedviews to indicate like parts.

In said views, a and a indicate the two pivotally arranged portions ofthe lock-hinge, the portion a being in the form of a screwthreadedc'ylinder, which is open at both ends and is provided with a forwardlyextending projection on having an upright post or pintle a substantiallyas shown( The portion a, which formsa hinge leaf, is provided with theoutwardly extending arm a provided at or near its free end with aperforation 0. whereby said hinge-leaf a, can be rotatively fitted uponthe upright or pintle a of the portion a of the hinge. The perforatedend-portion of the arm of, as will be seen from Figs. 1 and 4, isprovided withth'e straight sides a and a arranged substantially asshown, and the sides a are provided with suitably arranged ribs orprojections (1 the purpose of which will be fully described hereinafter.

Within the cylinder a, I arrange a stiff coil spring b, in such a mannerbetween a pin 1) secured in said cylinder, and the end portion 0 of aplungerc, that the free end'of said plunger will be normally forcedagainst one of the sides a or a of the perforated end of the arm a aswill be seen from the several figures of the drawings. When the shutteror door is closed or is in its entirely opened position, then the rib orprojection a on the said side a of the arm a normally rests in acorrespondingly arranged groove 0 in the end of the plunger 0 andthereby prevents the separation of the several parts of the hinge, byaccident or otherwise. In order to separate the said parts, all that isnecessary, is to rotate the shutter or door tothe position, indicated inFig. 4, thereby Withdrawing the projection or rib a from the groove 0and bringing the straight side a of the arm-portion of opposite the endof the plunger 0, and the shutter or door can thus be lifted off itshinges.

To secure the portion a of the hinge in position on the frame work d, asuitable hole is bored into said frame, and the screw-threaded cylinder0, screwed into said hole until the flange a 'on said cylinder restsfirmly against the frame work (1. The hinge leaf 0. is secured to thedoor or shutter 01 in the usual manner by means of suitable screws.

The forward end of the cylinder a may be enlarged, as at a and theplunger 0 provided In some cases, I may provide the cylinder at with asuitable hole or opening a kas shown 1n Fig. 6, which permits theoutflow of water,

and said cylinder may also be provided with 1 perforated ears or lugs a,as shown in Fig. 7, to be used as an extra precaution for securing thecylinder at to the frame work d.

Having thus described my invention, what I claim is 1. In a lock hinge,a screw-threaded cylinder adapted to be screwed into the frame-work,

having a spring-actuated plunger therein, pro- 1 vided with a groove orrecess 0 in the end, and an upwardly projecting pintle :on saidcylinder, in combination, with a leaf a, having a perforated armprovided with straight sides a and a and a rib or projection on eachside a substantially as and for the purposes set forth.

2. In a lock hinge, a screw-threaded cylinder adapted to be screwed intothe frame work, having a spring-actuated plunger therein, provided witha groove or recess a in the end, and an upwardly projecting pintle onsaid cylinder, a flexible washer or gasket, surrounding said plunger andarranged in an enlargement in the front end of the cylinder, incombination, with a leaf at, having a perforated arm provided withstraight sides a and a and a rib or projection on each side asubstantially as and for the purposes set forth.

In testimony that Iclaim the invention set forth above I have hereuntoset my hand this 4th day ofSeptember, 1894.

JOSEF WOLF. Witnesses:

FREDK. U. FRAENTZEL, WM. H. CAMFIELD, Jr.

